Brachiopod body fossils in the Ridgeley Member of the Old Port Formation, a Devonian sandstone (quartz arenite) which outcrops in Maryland, Pennsylvania, and West Virginia.
This outcrop is in a railroad cut on the Great Allegheny Passage, approximately one mile northeast of the intersection of Cash Valley Road with the railroad tracks in La Vale, MD.
To explore a hand sample from this outcrop, click here:
http://gigapan.com/gigapans/143082